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VOLUME 10 , ISSUE 1 ( January-February, 2019 ) > List of Articles

ORIGINAL RESEARCH

Frequency of Bolton Tooth-size Discrepancy among Saudi Orthodontic Subjects and Relevance in Concordance with Gender Predilection

Essamet Maamar, Syed AA Bukhari, Roa Hakami, Basmah A Abdulfatah

Keywords : Bolton analysis, Ideal occlusion, Orthodontic treatment, Tooth-size discrepancy

Citation Information : Maamar E, Bukhari SA, Hakami R, Abdulfatah BA. Frequency of Bolton Tooth-size Discrepancy among Saudi Orthodontic Subjects and Relevance in Concordance with Gender Predilection. World J Dent 2019; 10 (1):23-28.

DOI: 10.5005/jp-journals-10015-1597

License: CC BY-NC 4.0

Published Online: 01-06-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Aims: The aims of this study were to determine the prevalence of Bolton intermaxillary tooth-size discrepancy among Saudi orthodontic patients and to evaluate gender differences. Materials and methods: Pretreatment study models of 98 Saudi orthodontic patients (45 men and 53 women) were included in this study. The mesiodistal width from 1st molar to the opposite 1st was measured by a digital caliper, and Bolton anterior ratio (BAR) and Bolton overall ratio (BOR) were calculated. The independent samples t-student test was used to compare the values of BAR and BOR between men and women. The Chi-square test was used to test the gender differences in patients having Bolton tooth-size ratio away from 2 SD of Bolton mean value. Results: Significant differences were not found between men and women in BAR and BOR. The frequency of intermaxillary tooth-size discrepancy was 21.6% and 17.3% for anterior and overall ratio, respectively. Significant differences were found between men and women in the anterior and overall intermaxillary tooth-size discrepancy. Conclusion: Male orthodontic patients possess significantly more anterior and overall intermaxillary tooth-size discrepancies than female patients. Furthermore, the prevalence of Bolton tooth-size discrepancy in Saudi orthodontic patients is quite large enough to lead clinicians to be aware of it and proceed Bolton index in their quotidian orthodontic diagnosis. Clinical significance: The failure to diagnose intermaxillary tooth-size discrepancies prevents obtaining optimal occlusal relationship and increases the duration of the orthodontic therapy. Clinicians must consider Bolton tooth-size analysis as a primordial tool in their quotidian orthodontic diagnosis process and treatment planning so that they can avoid embarrassing situations at the end of the treatment.


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  1. Bolton A. Disharmony in tooth size and its relation to the analysis and treatment of malocclusion. Angle Orthod 1958;28:113-130.
  2. Bolton WA. The clinical application of a tooth-size analysis. Am J Orthod 1962;48:504-529.
  3. Black GV. Descriptive anatomy of the human teeth. 4th ed. Philadelphia: SS White Dental Mfg. Co.; 1902.
  4. Wheeler RC. A textbook of dental anatomy and physiology. Philadelphia: WB Saunders; 1961.
  5. Ballard ML. Asymmetry in tooth size; a factor in the etiology, diagnosis, and treatment of malocclusion. Angle Orthod 1944;14:67-71.
  6. Neff CW. Tailored occlusion with the anterior coefficient. Am J Orthod 1949;35:309-314.
  7. Lundström A. Intermaxillary tooth width ratio and tooth alignment and occlusion. Acta Odontol Stand 19.54; 12:265- 292.
  8. Stifter J. A study of Pont's, Howes’, Rees’, Neff ‘s and Bolton's analyses on Class I adult dentitions. Angle Orthod 1958; 28:215.
  9. Lavelle CLB. Maxillary and mandibular tooth size in different racial groups and in different occlusal categories. Am J Orthod 1972;61:29-37.
  10. Paredes V, Gandia JL, Cibrian R. Do Bolton's ratios apply to a Spanish population? Am J Orthod Dentofacial Orthop 2006;129: 428-430.
  11. Smith SS, Buschang PH, Watanabe E. Interarch tooth size relationships of 3 populations: “Does Bolton's analysis apply?” Am J Orthod Dentofacial Orthop 2000;117:169-174.
  12. Crosby D, Alexander C. The occurrence of tooth size discrepancies among different malocclusion groups. American Journal of Orthodontics and Dentofacial Orthopedics. 1989;95(6):457-461.
  13. Freeman J, Maskeroni A, Lorton L. Frequency of Bolton tooth-size discrepancies among orthodontic patients. American Journal of Orthodontics and Dentofacial Orthopedics. 1996;110(1):24-27.
  14. Nie Q, Lin J. Comparison of intermaxillary tooth size discrepancies among different malocclusion groups. American Journal of Orthodontics and Dentofacial Orthopedics. 1999;116(5):539-544.
  15. Uysal T, Sari Z, Basciftci FA, Memili B. Intermaxillary tooth size discrepancy and malocclusion: is there a relation?. The Angle orthodontist. 2005 Mar;75(2):208-213.
  16. Lavelle C. Maxillary and mandibular tooth size in different racial groups and in different occlusal categories. American Journal of Orthodontics. 1972;61(1):29-37.
  17. Santoro M, Ayoub ME, Arthur Pardi V, Cangialosi TJ. Mesiodistal crown dimensions and tooth size discrepancy of the permanent dentition of Dominican Americans. The Angle Orthodontist. 2000 Aug;70(4):303-307.
  18. Ta TA, Ling JY, Hägg U. Tooth-size discrepancies among different occlusion groups of southern Chinese children. American Journal of Orthodontics and Dentofacial Orthopedics. 2001 Nov 1;120(5):556-558.
  19. Moorrees CF, Reed RB. Biometrics of crowding and spacing of the teeth in the mandible. Am J Phys Anthropol. 1954;12: 77–88.
  20. Aldrees et al. Is arch form influenced by sagittal molar relationship or Bolton tooth-size discrepancy BMC Oral Health 2015;15:70-10.
  21. Endo T, Shundo I, Abe R, Ishida K, Yoshino S, Shimooka S. Applicability of Bolton's tooth size ratios to a Japanese orthodontic population. Odontology. 2007;95(1):57-60.
  22. Al-Omari IK, Al-Bitar ZB, Hamdan AM. Tooth size discrepancies among Jordanian schoolchildren. Eur J Orthod. 2008;30:527-531.
  23. Bernabe E, Major PW, Flores-Mir C. Tooth-width ratio discrepancies in a sample of Peruvian adolescents. Am J Orthod Dentofacial Orthop.004;125:361-365.
  24. Al-Gunaid T, Masaki Y, Saito I. Tooth size width and Bolton ratio in Yemenis. J Orthod Sci. 2012;1:2:40-45.
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